[Paraview] Please help to understand the live mode of Catalyst

[Junyi Han]

Hi Andy,

I'm still confused about the download part.
The rendered image is sent from the simulation to the client. Then, if I
click on the icon (circle with triangle), the rendered image will be copied
to my local pipeline (like builtin) and I can operate on this local
pipeline such as adding filter, is that right?

Best wishes,
Junyi Han


2013/10/21 Andy Bauer <andy.bauer at kitware.com>

> Hi,
>
> The Catalyst live mode is still beta functionality. The client does
> connect to the Catalyst enabled simulation directly. You have to keep in
> mind that there's a pipeline on the server and a separate pipeline on the
> client. Essentially the pipeline on the client uses the requested filter
> output from the server and uses that as the source. The pipeline on the
> server branches of the 'catalyst:' server (instead of the eyeball it will
> have a circle with an intersecting triangle on the left). You can click on
> that icon to download that data to your client. You should be able to add
> in other filters on the Catalyst server by selecting the desired filter to
> chain off of in the Pipeline Browser and then choosing the desired filter
> in the menu.
>
> If I remember correctly, the initial pipeline helps set up the environment
> on the Catalyst server to work with. For big simulations, you wouldn't want
> to download the full data set to the client anyway.
>
> Regards,
> Andy
>
>
>
>
> On Mon, Oct 21, 2013 at 12:50 PM, Junyi Han <demonmerlin at gmail.com> wrote:
>
>> Dear all,
>>
>> I'm new to Catalyst. I'm wondering how does the live mode work.
>> In my understanding, the simulation is modified to call Catalyst library
>> which can get pre-processed information from a python script file. The
>> simulation also connects to paraview client directly. It means that there
>> is no pvserver, instead, the simulation calls Catalyst library which based
>> on paraview lib and VTK lib to process data like pvserver, is that correct?
>> But in live mode, if I modify the paraview pipeline through the Paraview
>> client, for example, add a filter, how to inform the simulation that the
>> pipeline has been changed? If the simulation can be noticed of the modified
>> pipeline, why do we need to create a python script to describe the pipeline
>> at the beginning?
>>
>>
>> Best wishes,
>> Junyi Han
>>
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